框架现浇结构改造过程中仅拆改框架柱的施工技术

Construction Technology of Only Removing and Modifying Frame Columns in Frame Cast-in-situ Structure Reconstruction Process

南京新媒体大厦项目工程实施过程中,因特殊原因导致部分框架柱需在水平结构施工完成后才能进行施工。为此,仅对有变化的柱及搭接部分采用型钢换撑进行回顶后再拆除,其余部分不进行拆改。总结了关键的施工步骤和施工中应注意的关键事项,最终在节约成本、加快进度等方面都获得了不错的成效,取得了较好的环保和经济效益。

During the implementation of Nanjing new media building project,due to special reasons,several frame columns can only be constructed after the completion of horizontal structure construction.Therefore,only the modified columns and overlapping parts shall be removed after the support is replaced with section steel,and the rest shall not be removed.The key construction steps and attentions that should be paid during the construction are summarized,and finally,good results have been achieved in saving cost and accelerating progress,and good environmental protection and economic benefits have been achieved.